Protective end cap for a ball point pen



FIG. 1 is a side elevational view of a protective end cap for a ball point pen showing my new design, a ball point pen being shown in exploded condition therein in broken lines for illustrative purposes only.

FIG. 2 is a top plan view thereof; and

FIG. 3 is a bottom plan view thereof.

The tip of the cap and the cylindrical portion thereof are stippled to indicate that the colors thereof are the same, and are contrasted with the color of the conical portion. 

The ornamental design for a protective end cap for a ball point pen, as shown and described. 